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<div class="textblock"><code>#include &lt;utility&gt;</code><br />
<code>#include &lt;<a class="el" href="../../de/d7f/gkernel_8hpp.html">opencv2/gapi/gkernel.hpp</a>&gt;</code><br />
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d7d/structcv_1_1gapi_1_1video_1_1BackgroundSubtractorParams.html">cv::gapi::video::BackgroundSubtractorParams</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Structure for the Background Subtractor operation's initialization parameters.  <a href="../../d4/d7d/structcv_1_1gapi_1_1video_1_1BackgroundSubtractorParams.html#details">More...</a><br /></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d6/d7e/structcv_1_1detail_1_1CompileArgTag_3_01cv_1_1gapi_1_1video_1_1BackgroundSubtractorParams_01_4.html">cv::detail::CompileArgTag&lt; cv::gapi::video::BackgroundSubtractorParams &gt;</a></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d7/df7/structcv_1_1gapi_1_1KalmanParams.html">cv::gapi::KalmanParams</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Structure for the Kalman filter's initialization parameters.  <a href="../../d7/df7/structcv_1_1gapi_1_1KalmanParams.html#details">More...</a><br /></td></tr>
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<tr class="memdesc:d2/d75/namespacecv"><td class="mdescLeft">&#160;</td><td class="mdescRight">"black box" representation of the file storage associated with a file on disk. <br /></td></tr>
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<tr class="memitem:a2468e21aa31c5d1b86a1f4a5d2d48d72"><td class="memItemLeft" align="right" valign="top">using&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d7/d9d/namespacecv_1_1gapi_1_1video.html#a2468e21aa31c5d1b86a1f4a5d2d48d72">cv::gapi::video::GBuildPyrOutput</a> = std::tuple&lt; GArray&lt; GMat &gt;, GScalar &gt;</td></tr>
<tr class="separator:a2468e21aa31c5d1b86a1f4a5d2d48d72"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a2e85b83898ec980b9ee28cd1f80a0a16"><td class="memItemLeft" align="right" valign="top">using&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d7/d9d/namespacecv_1_1gapi_1_1video.html#a2e85b83898ec980b9ee28cd1f80a0a16">cv::gapi::video::GOptFlowLKOutput</a> = std::tuple&lt; <a class="el" href="../../d3/d44/classcv_1_1GArray.html">cv::GArray</a>&lt; <a class="el" href="../../dc/d84/group__core__basic.html#ga7d080aa40de011e4410bca63385ffe2a">cv::Point2f</a> &gt;, <a class="el" href="../../d3/d44/classcv_1_1GArray.html">cv::GArray</a>&lt; <a class="el" href="../../d1/d1b/group__core__hal__interface.html#ga65f85814a8290f9797005d3b28e7e5fc">uchar</a> &gt;, <a class="el" href="../../d3/d44/classcv_1_1GArray.html">cv::GArray</a>&lt; float &gt; &gt;</td></tr>
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<tr class="memitem:aedd70c42656ff75548e0f29f416359a8"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d7/d9d/namespacecv_1_1gapi_1_1video.html#aedd70c42656ff75548e0f29f416359a8">cv::gapi::video::BackgroundSubtractorType</a> { <br />
&#160;&#160;<a class="el" href="../../d7/d9d/namespacecv_1_1gapi_1_1video.html#aedd70c42656ff75548e0f29f416359a8aa263043e7c10ee837dd678d43889aab1">cv::gapi::video::TYPE_BS_MOG2</a>, 
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&#160;&#160;<a class="el" href="../../d7/d9d/namespacecv_1_1gapi_1_1video.html#aedd70c42656ff75548e0f29f416359a8ab79b105ef904fe6efd6e2da4518c3540">cv::gapi::video::TYPE_BS_KNN</a>
<br />
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<tr class="memitem:gaab6a9c8473dbb256ec55865ee189b417"><td class="memItemLeft" align="right" valign="top">GMat&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d55/group__gapi__video.html#gaab6a9c8473dbb256ec55865ee189b417">cv::gapi::BackgroundSubtractor</a> (const GMat &amp;src, const <a class="el" href="../../d4/d7d/structcv_1_1gapi_1_1video_1_1BackgroundSubtractorParams.html">cv::gapi::video::BackgroundSubtractorParams</a> &amp;bsParams)</td></tr>
<tr class="memdesc:gaab6a9c8473dbb256ec55865ee189b417"><td class="mdescLeft">&#160;</td><td class="mdescRight">Gaussian Mixture-based or K-nearest neighbours-based Background/Foreground Segmentation <a class="el" href="../../d3/d46/classcv_1_1Algorithm.html" title="This is a base class for all more or less complex algorithms in OpenCV. ">Algorithm</a>. The operation generates a foreground mask.  <a href="../../d4/d55/group__gapi__video.html#gaab6a9c8473dbb256ec55865ee189b417">More...</a><br /></td></tr>
<tr class="separator:gaab6a9c8473dbb256ec55865ee189b417"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gacb49bc39f119eb75cf7095193f5ee1e3"><td class="memItemLeft" align="right" valign="top">std::tuple&lt; GArray&lt; GMat &gt;, GScalar &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d55/group__gapi__video.html#gacb49bc39f119eb75cf7095193f5ee1e3">cv::gapi::buildOpticalFlowPyramid</a> (const GMat &amp;img, const Size &amp;winSize, const GScalar &amp;maxLevel, bool withDerivatives=true, int pyrBorder=BORDER_REFLECT_101, int derivBorder=BORDER_CONSTANT, bool tryReuseInputImage=true)</td></tr>
<tr class="memdesc:gacb49bc39f119eb75cf7095193f5ee1e3"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructs the image pyramid which can be passed to calcOpticalFlowPyrLK.  <a href="../../d4/d55/group__gapi__video.html#gacb49bc39f119eb75cf7095193f5ee1e3">More...</a><br /></td></tr>
<tr class="separator:gacb49bc39f119eb75cf7095193f5ee1e3"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga2f103dc31d82a7db52afbc141ce2bd53"><td class="memItemLeft" align="right" valign="top">std::tuple&lt; GArray&lt; Point2f &gt;, GArray&lt; <a class="el" href="../../d1/d1b/group__core__hal__interface.html#ga65f85814a8290f9797005d3b28e7e5fc">uchar</a> &gt;, GArray&lt; float &gt; &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d55/group__gapi__video.html#ga2f103dc31d82a7db52afbc141ce2bd53">cv::gapi::calcOpticalFlowPyrLK</a> (const GMat &amp;prevImg, const GMat &amp;nextImg, const GArray&lt; Point2f &gt; &amp;prevPts, const GArray&lt; Point2f &gt; &amp;predPts, const Size &amp;winSize=Size(21, 21), const GScalar &amp;maxLevel=3, const TermCriteria &amp;criteria=TermCriteria(TermCriteria::COUNT|TermCriteria::EPS, 30, 0.01), int flags=0, double minEigThresh=1e-4)</td></tr>
<tr class="memdesc:ga2f103dc31d82a7db52afbc141ce2bd53"><td class="mdescLeft">&#160;</td><td class="mdescRight">Calculates an optical flow for a sparse feature set using the iterative Lucas-Kanade method with pyramids.  <a href="../../d4/d55/group__gapi__video.html#ga2f103dc31d82a7db52afbc141ce2bd53">More...</a><br /></td></tr>
<tr class="separator:ga2f103dc31d82a7db52afbc141ce2bd53"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga75d083db1d59c5b1eed0d4ba71461ab7"><td class="memItemLeft" align="right" valign="top">std::tuple&lt; GArray&lt; Point2f &gt;, GArray&lt; <a class="el" href="../../d1/d1b/group__core__hal__interface.html#ga65f85814a8290f9797005d3b28e7e5fc">uchar</a> &gt;, GArray&lt; float &gt; &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d55/group__gapi__video.html#ga75d083db1d59c5b1eed0d4ba71461ab7">cv::gapi::calcOpticalFlowPyrLK</a> (const GArray&lt; GMat &gt; &amp;prevPyr, const GArray&lt; GMat &gt; &amp;nextPyr, const GArray&lt; Point2f &gt; &amp;prevPts, const GArray&lt; Point2f &gt; &amp;predPts, const Size &amp;winSize=Size(21, 21), const GScalar &amp;maxLevel=3, const TermCriteria &amp;criteria=TermCriteria(TermCriteria::COUNT|TermCriteria::EPS, 30, 0.01), int flags=0, double minEigThresh=1e-4)</td></tr>
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<tr class="memitem:a8b8d1b139239ece964b41fd9a90f1afa"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d7/d9d/namespacecv_1_1gapi_1_1video.html#a8b8d1b139239ece964b41fd9a90f1afa">cv::gapi::video::checkParams</a> (const <a class="el" href="../../d7/df7/structcv_1_1gapi_1_1KalmanParams.html">cv::gapi::KalmanParams</a> &amp;kfParams, const <a class="el" href="../../d0/d82/structcv_1_1GMatDesc.html">cv::GMatDesc</a> &amp;measurement, const <a class="el" href="../../d0/d82/structcv_1_1GMatDesc.html">cv::GMatDesc</a> &amp;control={})</td></tr>
<tr class="separator:a8b8d1b139239ece964b41fd9a90f1afa"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a7db6a9a0ab821b64757c0d2d45be1f0f"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d7/d9d/namespacecv_1_1gapi_1_1video.html#a7db6a9a0ab821b64757c0d2d45be1f0f">cv::gapi::video::G_TYPED_KERNEL</a> (GBuildOptFlowPyramid,&lt; GBuildPyrOutput(GMat, Size, GScalar, bool, int, int, bool)&gt;, &quot;org.opencv.video.buildOpticalFlowPyramid&quot;)</td></tr>
<tr class="separator:a7db6a9a0ab821b64757c0d2d45be1f0f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:afcc0ad5d918b96632e8b3352d302cde5"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d7/d9d/namespacecv_1_1gapi_1_1video.html#afcc0ad5d918b96632e8b3352d302cde5">cv::gapi::video::G_TYPED_KERNEL</a> (GCalcOptFlowLK,&lt; GOptFlowLKOutput(GMat, GMat, <a class="el" href="../../d3/d44/classcv_1_1GArray.html">cv::GArray</a>&lt; <a class="el" href="../../dc/d84/group__core__basic.html#ga7d080aa40de011e4410bca63385ffe2a">cv::Point2f</a> &gt;, <a class="el" href="../../d3/d44/classcv_1_1GArray.html">cv::GArray</a>&lt; <a class="el" href="../../dc/d84/group__core__basic.html#ga7d080aa40de011e4410bca63385ffe2a">cv::Point2f</a> &gt;, Size, GScalar, TermCriteria, int, double)&gt;, &quot;org.opencv.video.calcOpticalFlowPyrLK&quot;)</td></tr>
<tr class="separator:afcc0ad5d918b96632e8b3352d302cde5"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a87e51c18993ba32d34ba62a0b6a63f92"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d7/d9d/namespacecv_1_1gapi_1_1video.html#a87e51c18993ba32d34ba62a0b6a63f92">cv::gapi::video::G_TYPED_KERNEL</a> (GCalcOptFlowLKForPyr,&lt; GOptFlowLKOutput(<a class="el" href="../../d3/d44/classcv_1_1GArray.html">cv::GArray</a>&lt; <a class="el" href="../../df/daa/classcv_1_1GMat.html">cv::GMat</a> &gt;, <a class="el" href="../../d3/d44/classcv_1_1GArray.html">cv::GArray</a>&lt; <a class="el" href="../../df/daa/classcv_1_1GMat.html">cv::GMat</a> &gt;, <a class="el" href="../../d3/d44/classcv_1_1GArray.html">cv::GArray</a>&lt; <a class="el" href="../../dc/d84/group__core__basic.html#ga7d080aa40de011e4410bca63385ffe2a">cv::Point2f</a> &gt;, <a class="el" href="../../d3/d44/classcv_1_1GArray.html">cv::GArray</a>&lt; <a class="el" href="../../dc/d84/group__core__basic.html#ga7d080aa40de011e4410bca63385ffe2a">cv::Point2f</a> &gt;, Size, GScalar, TermCriteria, int, double)&gt;, &quot;org.opencv.video.calcOpticalFlowPyrLKForPyr&quot;)</td></tr>
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<tr class="memitem:a8b7d6745ac03bf69c6ddde91afeb8912"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d7/d9d/namespacecv_1_1gapi_1_1video.html#a8b7d6745ac03bf69c6ddde91afeb8912">cv::gapi::video::G_TYPED_KERNEL</a> (GBackgroundSubtractor,&lt; GMat(GMat, BackgroundSubtractorParams)&gt;, &quot;org.opencv.video.BackgroundSubtractor&quot;)</td></tr>
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<tr class="memitem:a11ee49baa28c8c29b34c33b1296bf3f2"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d7/d9d/namespacecv_1_1gapi_1_1video.html#a11ee49baa28c8c29b34c33b1296bf3f2">cv::gapi::video::G_TYPED_KERNEL</a> (GKalmanFilter,&lt; GMat(GMat, GOpaque&lt; bool &gt;, GMat, KalmanParams)&gt;, &quot;org.opencv.video.KalmanFilter&quot;)</td></tr>
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<tr class="memitem:ga01d36765f6c877f577f15f04850ffa19"><td class="memItemLeft" align="right" valign="top">GMat&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d55/group__gapi__video.html#ga01d36765f6c877f577f15f04850ffa19">cv::gapi::KalmanFilter</a> (const GMat &amp;measurement, const GOpaque&lt; bool &gt; &amp;haveMeasurement, const GMat &amp;control, const <a class="el" href="../../d7/df7/structcv_1_1gapi_1_1KalmanParams.html">cv::gapi::KalmanParams</a> &amp;kfParams)</td></tr>
<tr class="memdesc:ga01d36765f6c877f577f15f04850ffa19"><td class="mdescLeft">&#160;</td><td class="mdescRight">Standard Kalman filter algorithm <a href="http://en.wikipedia.org/wiki/Kalman_filter">http://en.wikipedia.org/wiki/Kalman_filter</a>.  <a href="../../d4/d55/group__gapi__video.html#ga01d36765f6c877f577f15f04850ffa19">More...</a><br /></td></tr>
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<tr class="memitem:ga0b18fdc215bb554b34f01099c85df2c7"><td class="memItemLeft" align="right" valign="top">GMat&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d55/group__gapi__video.html#ga0b18fdc215bb554b34f01099c85df2c7">cv::gapi::KalmanFilter</a> (const GMat &amp;measurement, const GOpaque&lt; bool &gt; &amp;haveMeasurement, const <a class="el" href="../../d7/df7/structcv_1_1gapi_1_1KalmanParams.html">cv::gapi::KalmanParams</a> &amp;kfParams)</td></tr>
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